U.S. patent number 10,966,482 [Application Number 16/159,600] was granted by the patent office on 2021-04-06 for footwear with stabilizing sole.
This patent grant is currently assigned to Deckers Outdoor Corporation. The grantee listed for this patent is Deckers Outdoor Corporation. Invention is credited to Christophe Aubonnet, Vincent Bouillard, Jean Luc Diard, Thibaut Poupard.
![](/patent/grant/10966482/US10966482-20210406-D00000.png)
![](/patent/grant/10966482/US10966482-20210406-D00001.png)
![](/patent/grant/10966482/US10966482-20210406-D00002.png)
![](/patent/grant/10966482/US10966482-20210406-D00003.png)
![](/patent/grant/10966482/US10966482-20210406-D00004.png)
![](/patent/grant/10966482/US10966482-20210406-D00005.png)
![](/patent/grant/10966482/US10966482-20210406-D00006.png)
![](/patent/grant/10966482/US10966482-20210406-D00007.png)
![](/patent/grant/10966482/US10966482-20210406-D00008.png)
![](/patent/grant/10966482/US10966482-20210406-D00009.png)
![](/patent/grant/10966482/US10966482-20210406-D00010.png)
View All Diagrams
United States Patent |
10,966,482 |
Aubonnet , et al. |
April 6, 2021 |
Footwear with stabilizing sole
Abstract
An article of footwear is provided and includes an upper having
a bottom surface and a length and a sole secured to the bottom
surface of the upper and including a midsole and an outsole, the
outsole including a peripheral stabilizing member extending
outwardly from the upper along a periphery of the upper from a
medial side to a lateral side of the upper, the peripheral
stabilizing member having a width and a length that are each at
least 20% of the length of the upper.
Inventors: |
Aubonnet; Christophe
(Tresserve, FR), Diard; Jean Luc (Annecy,
FR), Poupard; Thibaut (Foy les Lyon, FR),
Bouillard; Vincent (Marcellaz Albanais, FR) |
Applicant: |
Name |
City |
State |
Country |
Type |
Deckers Outdoor Corporation |
Goleta |
CA |
US |
|
|
Assignee: |
Deckers Outdoor Corporation
(Goleta, CA)
|
Family
ID: |
1000005466785 |
Appl.
No.: |
16/159,600 |
Filed: |
October 12, 2018 |
Prior Publication Data
|
|
|
|
Document
Identifier |
Publication Date |
|
US 20200113272 A1 |
Apr 16, 2020 |
|
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A43B
7/24 (20130101); A43B 13/223 (20130101); A43B
13/141 (20130101); A43B 13/143 (20130101); A43B
13/14 (20130101); A43B 3/0042 (20130101) |
Current International
Class: |
A43B
13/14 (20060101); A43B 7/24 (20060101); A43B
3/00 (20060101); A43B 13/22 (20060101) |
Field of
Search: |
;36/25R,88,103,107,113,132 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Bays; Marie D
Attorney, Agent or Firm: Greer, Burns & Crain, Ltd.
Claims
What is claimed is:
1. An article of footwear comprising: an upper having a bottom
surface and a length; and a sole secured to said bottom surface of
said upper and including a midsole and an outsole, said outsole
including a peripheral stabilizing member extending outwardly from
said midsole along a periphery of said midsole from a medial side
to a lateral side of said midsole, said peripheral stabilizing
member having a width and a length that are each at least 20% of
said length of said upper.
2. The article of footwear of claim 1, wherein said peripheral
stabilizing member extends at least at an angle of at least 50
degrees relative to said bottom surface of said midsole.
3. The article of footwear of claim 1, wherein said peripheral
stabilizing member extends at an angle of 75 to 80 degrees relative
to said bottom surface of said midsole.
4. The article of footwear of claim 1, wherein said peripheral
stabilizing member includes a lateral stabilizing member and a rear
stabilizing member, said lateral stabilizing member extending from
said medial and lateral sides of said midsole, and said rear
stabilizing member extending from a rear end of said midsole.
5. The article of footwear of claim 4, wherein said lateral
stabilizing member extends at a first distance from said upper, and
said rear stabilizing member extends at a second distance from said
upper, wherein said first distance is less than said second
distance.
6. The article of footwear of claim 1, further comprising a front
stabilizing member extending outwardly from a front end of said
upper.
7. The article of footwear of claim 6, wherein said front
stabilizing member has a length of 9% to 60% of the length of said
upper.
8. The article of footwear of claim 6, wherein a front end of said
front stabilizing member has a height of at least 2.0 cm above a
bottom surface of said sole.
9. The article of footwear of claim 1, wherein a thickness of said
peripheral stabilizing member is at least 1.0 cm.
10. The article of footwear of claim 1, further comprising a
support plate positioned between the midsole and the outsole.
11. An article of footwear comprising: an upper having a bottom
surface and a length; and a sole secured to said bottom surface of
said upper and including a midsole and an outsole, said outsole
including a front stabilizing member and a rear stabilizing member,
said front stabilizing member extending outwardly from a front end
of said upper and said rear stabilizing member extending outwardly
from a rear end of said midsole, said rear stabilizing member
having a width of at least 20% of said length of said upper and a
length of at least 20% of said length of said upper.
12. The article of footwear of claim 11, wherein said rear
stabilizing member extends at least at an angle of at least 75
degrees relative to said bottom surface of said midsole.
13. The article of footwear of claim 11, wherein a length of said
front stabilizing member is 9% to 60% of said length of said
upper.
14. The article of footwear of claim 11, wherein a front end of
said front stabilizing member has a height of at least 2.0 cm above
a bottom surface of said sole.
15. The article of footwear of claim 11, wherein a thickness of
said rear stabilizing member is at least 1.0 cm.
16. The article of footwear of claim 11, further comprising a
support plate positioned between the midsole and the outsole.
17. An article of footwear comprising: an upper having a bottom
surface and a length; and a sole secured to said bottom surface of
said upper and including a midsole and an outsole, said sole
including a lateral stabilizing member, said lateral stabilizing
member having opposing first and second lobes, said first lobe
extending from a medial side of said midsole and said second lobe
extending from a lateral side of said midsole, said first and
second lobes each have a width that is at least 5% of said length
of said upper.
18. The article of footwear of claim 17, wherein said first lobe
extends a medial distance from said upper and said second lobe
extends a lateral distance from said upper, wherein said medial
distance and said lateral distance are the same.
19. The article of footwear of claim 17, wherein said first lobe
extends a medial distance from said upper and said second lobe
extends a lateral distance from said upper, wherein said medial
distance and said lateral distance are different.
20. The article of footwear of claim 17, further comprising a
support plate positioned between the midsole and the outsole.
21. The article of footwear of claim 17, wherein said first lobe
and said second lobe extend from one of said midsole and said
outsole.
Description
BACKGROUND
The present application relates generally to footwear, and more
particularly, to a stabilizing sole for an article of footwear that
provides stability and uniformly supports a user's feet while
reducing impact forces on the user's feet and enhancing forward
propulsion during impact movements such as walking, jogging and
running.
Running is particularly hard on a person's feet and body. For
example, the impact of each foot striking the ground during running
is the equivalent of three to five times of your body weight or
more. There is a particular large impact force in the heel area of
the foot during each heel strike. Insufficient cushioning and
support and misalignment of a person's feet within their shoes
reduces the absorption of this impact, thereby transferring more of
the shock and stress from such impact forces to the user's body,
and unnecessarily stressing the knees, hips and lower back. As a
person runs, the shock and stress are repeated at every foot strike
with the ground, which can cause stress injuries, pain and excess
wear on a person's joints.
Further, the running motion is a succession of weight bearing
phases and suspension phases, where a stride is a combination of a
contact phase and a thrust phase. During the ground contact phase,
there is a deceleration of the forward progress of a runner's body,
where energy is stored in the muscles when the runner's leg bends
to absorb shock from the contact between the runner's feet and the
ground. During the forward thrust phase, the runner's body
accelerates by applying the largest force possible to the ground in
the shortest amount of time. This force is created by the leg
muscles and the release of stored energy when the leg relaxes. In
this way, the ground contact phase and the suspension phase
minimize deceleration upon contact with the ground and maximize
forward thrust of the runner.
When the feet and ankles are properly supported, aligned and
sufficiently stabilized on the ground, a person's body is able to
remain balanced and absorb large impact forces. Also, biomechanical
efficiency improves to help reduce impact forces, while forming an
efficient lever to channel power correctly during propulsion.
Therefore, it is desirable to provide footwear that uniformly
supports, aligns and balances a person's feet during impact
movements, such as walking, jogging and running, to help reduce the
stresses on a person's feet and body from impact forces while
enhancing propulsion of the person's body.
SUMMARY
The present article of footwear has a sole and an upper that
provide enhanced balance on different types of surfaces, and
balance and stability to a user's foot during walking, jogging and
running.
In an embodiment, an article of footwear is provided and includes
an upper having a bottom surface and a length and a sole secured to
the bottom surface of the upper and including a midsole and an
outsole, where the outsole includes a peripheral stabilizing member
extending outwardly from the upper along a periphery of the upper
from a medial side to a lateral side of the upper, the peripheral
stabilizing member having a width and a length that are each at
least 20% of the length of the upper.
In another embodiment, an article of footwear is provided and
includes an upper having a bottom surface and a length and a sole
secured to the bottom surface of the upper and including a midsole
and an outsole, where the outsole includes a front stabilizing
member and a rear stabilizing member, the front stabilizing member
extending outwardly from a front end of the upper and the rear
stabilizing member extending outwardly from a rear end of the
upper, the rear stabilizing member having a width of at least 20%
of the length of the upper and a length of at least 20% of the
length of the upper.
In a further embodiment, an article of footwear is provided and
includes an upper having a bottom surface and a length and a sole
secured to the bottom surface of the upper and including a midsole
and an outsole, the outsole including a lateral stabilizing member,
the lateral stabilizing member having opposing first and second
lobes, the first lobe extending from a medial side of the upper and
the second lobe extending from a lateral side of the upper, the
first and second lobes each having a length that is at least 5% of
the length of the upper.
In another embodiment, an article of footwear is provided an
includes an upper and a sole secured to the upper and including a
midsole and an outsole, where the sole has a front portion with a
front contact surface area, and a rear portion with a rear contact
surface area, where the rear contact surface area is greater than
the front contact surface area.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a right side view of an embodiment of the present
footwear.
FIG. 2 is a left side view of the footwear of FIG. 1.
FIG. 3 is a top view of the footwear of FIG. 1 with the tongue and
laces removed.
FIG. 4 is a bottom view of the footwear of FIG. 1.
FIG. 5 is a rear view of the footwear of FIG. 1.
FIG. 6 is a right side view of an embodiment of an outsole of the
footwear of FIG. 1.
FIG. 7 is bottom view of the outsole of FIG. 6.
FIG. 8 is a left side view of the outsole of FIG. 6.
FIG. 9 is a top view of the outsole of FIG. 6.
FIG. 10 is a front view of the outsole of FIG. 6.
FIG. 11 is a rear view of the outsole of FIG. 6.
FIG. 12 is a right side view of the outsole of FIG. 6 including a
tongue and gusset component attached to the outsole, where the left
side view of the tongue and gusset component is a mirror images
thereof.
FIG. 13A is a top view of an embodiment of the tongue shown in FIG.
12.
FIG. 13B is an exploded top view of the different material layers
of the tongue shown in FIG. 13A.
FIG. 14 is a right side view of the outsole of FIG. 12 including a
rear collar attached to the outsole, where the left side view of
the rear collar is a mirror image thereof.
FIG. 15A is a front view of an embodiment of the rear collar shown
in FIG. 14.
FIG. 15B is a rear view of the rear collar of FIG. 15A.
FIG. 16 is a right side view of the outsole of FIG. 15 including a
vamp attached to the outsole, where the left side view of the vamp
is a mirror image thereof.
FIG. 17 is a left side view of another embodiment of the present
footwear.
FIG. 18 is a top view of the footwear of FIG. 17.
FIG. 19 is a cross-section view of the footwear shown in FIG. 18
substantially along line B-B in the direction generally
indicated.
FIG. 20 is a cross-section view of the footwear shown in FIG. 18
substantially along line C-C in the direction generally
indicated.
FIG. 21 is a cross-section view of the footwear shown in FIG. 18
substantially along line D-D in the direction generally
indicated.
FIG. 22 is a top view of another embodiment of the present footwear
having a front stabilizing member.
FIG. 23 is a top view of a further embodiment of the present
footwear having a rear stabilizing member.
FIG. 24 is a top view of another embodiment of the present footwear
having a rear stabilizing member.
FIG. 25 is a top view of a further embodiment of the present
footwear having lateral stabilizing members.
FIG. 26 is a top view of another embodiment of the present footwear
having a peripheral rear stabilizing member.
FIG. 27 is a top view of a further embodiment of the present
footwear having a front stabilizing member and a rear stabilizing
member.
FIG. 28 is a top view of another embodiment of the present footwear
having a front stabilizing member and lateral stabilizing
members.
FIG. 29 is a cross-section view of the footwear in FIG. 27 taken
substantially along line B-B in the direction generally
indicated.
FIG. 30 is a top view of another embodiment of the present footwear
having a front stabilizing member, lateral stabilizing members and
a rear stabilizing member.
FIG. 31 is a top view of a further embodiment of the present
footwear having a lateral stabilizing member having opposing lobes
extending outwardly from a rear portion of the sole.
FIG. 32 is a top view of another embodiment of the present footwear
having a front portion and a rear portion with different contact
surface areas.
FIG. 33 is a top view of an embodiment of the present footwear
including a peripheral stabilizing member connected to the sole by
a peripheral support member.
DETAILED DESCRIPTION
The present footwear includes a balanced sole attached to an upper
to form an article of footwear that stabilizes and cushions a
user's feet during walking, jogging and running while enhancing
propulsion. More specifically, the present article of footwear
includes a sole having a stabilizing portion that extends outwardly
from the upper at a rear end of the article of footwear and an
extended toe portion positioned at a height above the ground that
provides enhanced stability and propulsion for a user's feet during
movement on different ground surfaces.
Referring now to FIGS. 1-16, an embodiment of the present article
of footwear or shoe, generally indicated as 20, includes a sole 22
having a midsole 24 and an outsole 26, and an upper 28 attached to
the sole. The midsole 24 extends from a heel portion 30 to a
forefoot portion 32 of the shoe 20 and has a first height above the
ground 34 at the heel portion 30 of the shoe 20 and a second height
above the ground 34 at the front or toe portion 36 of the shoe. As
shown in FIG. 1, the midsole 24 curves downwardly from the heel
portion 30 toward the midfoot portion 38 of the shoe 20 and then
curves upwardly from the midfoot portion 38 to the toe portion 36.
In an embodiment, the midsole 24 has a first thickness T1 at the
heel portion 30, a second thickness T2 at the midfoot portion 38
and a third thickness T3 at the forefoot portion 32 of the shoe
where the second thickness is greater than the first and third
thicknesses. In the illustrated embodiment, the first thickness T1
is 3.5 to 4.5 cm, the second thickness T2 is 4.0 cm to 6.0 cm and
the third thickness T3 of the midsole is 3.0 cm to 5.0 cm. It
should be appreciated that the thickness of the midsole may be the
same from the heel to the forefoot of the shoe, and that the
midsole 24 may also have any suitable thickness or combination of
thicknesses based on the desired cushioning of the shoe. This
construction provides more stability and cushioning in the midfoot
and forefoot portions of the shoe 20 to help absorb impact forces
when the forefoot portion 38 of the shoe repeatedly contacts the
ground 34 during walking, jogging or running. In the illustrated
embodiment, the midsole 24 is made of Ethylene Vinyl Acetate (EVA).
It should be appreciated that the midsole 24 may be made of any
suitable material or combination of materials.
As shown in FIGS. 1-3 and 5, in an example embodiment, the sole 22
has a forefoot portion 40 that has a length of 9.0 cm and curves to
a point that is at a height of at least 2.0 cm above the ground 34.
The extended length and increased height of the forefoot portion 40
are both designed to increase the contact time between the forefoot
portion 32 of the shoe 20 and the ground 34 and lengthen a user's
gait cycle, i.e., the period of time between when a user's foot
initially contacts the ground and when that same foot contacts the
ground again, during walking, jogging or running. The combination
of increasing the contact time and lengthening the gait cycle
enables a user to move more smoothly on the ground, increases the
propulsion force of a user's foot on the ground and also helps to
delay fatigue during walking, jogging or running.
In the illustrated embodiment, the midsole 24 is attached to a top
surface 42 of the outsole 26, and extends from the heel portion 30
to the toe portion 36 of the shoe 20. As shown in FIGS. 1-3, 5, 6
and 8, the outsole 26 includes a stabilizing portion 44 that
extends outwardly from the midsole 24 at a designated angle
.crclbar. and distance relative to the midsole. As shown in FIG.
17, the angle .crclbar. is the angle between the vertical line
extending from the rear end of the midsole (such as E4) and a line
at the top surface of the rear stabilizing member. To enhance
stability and balance on different underlying surfaces, the
stabilizing portion 42 extends about the periphery or perimeter of
the heel portion 30 from a medial side 46 to a lateral side 48 of
the shoe 20. In an embodiment, the stabilizing portion 44 forms an
angle .crclbar. of at least 50 degrees, and more preferably, at
least 75 degrees. In another embodiment, the angle .crclbar. is 65
to 80 degrees and more preferably 75-80 degrees, relative to the
bottom surface 50 of the midsole 24, and extends outwardly from the
midsole at least 4.0 cm, and preferably at least 5.0 cm from the
rear end of the upper. By providing the stabilizing portion 44,
which has a wider base near the heel portion 30, the present shoe
20 is able to remain relatively balanced and stable on different
surfaces including uneven surfaces commonly found on trails and in
urban areas. This construction thereby helps a user to walk, jog or
run more smoothly and evenly on many different types of surfaces.
In this embodiment, the stabilizing portion 44 is made of a
combination of EVA and a foam material to provide both stability
and cushioning to a user's feet during use. It should be
appreciated that the stabilizing portion 44 may be made out of any
suitable material or combination of materials.
Referring now to FIGS. 12 to 15B, the upper 28 is attached to the
top surface 52 of the midsole 24 and is constructed of a plurality
of different components. As shown in FIG. 12, a tongue 54 and an
integrated gusset 56 are attached to the midsole 24. Specifically,
the gusset 56 includes opposing lateral members 58 where one of the
lateral members is attached to the medial side of the midsole 24
and the other lateral member is attached to the lateral side of the
midsole 24 by stitching or other suitable attachment method. The
gusset 56 further includes a forwardly extending top member 60 that
is integrally formed with the lateral members 58 and extends over
at least a portion of a user's foot near the toe cap 62.
Preferably, the gusset 56 is made of a flexible fabric material but
may be made with any suitable material.
The tongue 54 shown in FIGS. 13A and 13B has a body 64 with a
connecting part 66 and a tongue member 68. In the illustrated
embodiment, the tongue 54 is preferably made with a similar
material as the gusset 56 but may be made with any suitable
material. As shown in FIGS. 3 and 13A, the connecting part 66 is
attached to the gusset 56 by stitching, an adhesive or other
suitable attachment method. The tongue member 68 extends from the
gusset 56 toward the heel portion 30 of the shoe 20, and each side
of the tongue member 68 includes a flap 70 that extends around at
least a portion of the opposing sides of a user's foot. A pull
member 72 at the end of the tongue member 68 provides a gripping
area so that a user may grip the tongue member to adjust the fit
and position of the tongue 54 and shoe 20 relative to a user's
foot.
FIG. 13B shows the different material layers that combine to form
the tongue 54. A first layer or base layer 74 is made of a first
material that is preferably a stretchable and breathable material.
A second layer 76 is attached to the first layer by stitching or
adhesive and is made of a breathable material. A third layer 78 is
attached to the second layer 76 and is made of a thin material the
overlays the second layer and promotes the flow of air through the
second and third layers of the tongue. A fourth layer 80 having a
central opening 82 that is attached to the third layer 78 so that
the combination of the second and third layers is exposed on the
top side of the shoe. The first, second, third and fourth layers
74, 76, 78 and 80 may be made with any suitable material or
combination of materials.
Referring to FIG. 14, a rear collar 84 is attached to the rear
portion 86 of the midsole 24 by stitching or other suitable
attachment method. As shown in FIGS. 16A and 16B, the rear collar
84 includes an outer lining 88, an inner lining 90 attached at
least at the peripheral edge of the outer lining, and a foam
material 92 positioned between the inner and outer linings. The
foam material 92 is a polyurethane foam and is positioned in
predetermined areas adjacent to a user's foot to provide cushioning
and comfort. The rear collar 84 has upwardly extending arms 94 that
extend to opposing sides of the tongue 54 as shown in FIG. 15 and
overlap at least a portion of the outer surface of the tongue. In
the illustrated embodiment, the inner and outer linings 88, 90 are
made of a stretchable and breathable material, but may be made out
of any suitable material.
Referring to FIG. 16, a vamp 96 having a general U-shape includes a
first side 98 that extends along the medial side 46 of the shoe 20,
and a second side 100 that extends along a lateral side 48 of the
shoe 20. The vamp 96 further includes a toe portion 98 that
connects the first and second sides 98, 100 and extends over at
least a portion of the forefoot area of a user's foot. The vamp 96
is made of a durable material where the first and second sides 98,
100 of the vamp each include a series of tabs 102. Some of the tabs
102 form loops 104 and some of the tabs include holes 106. As shown
in FIGS. 1 and 2, a shoe lace 108 is threaded through the loops 104
and holes 106 associated with the tabs 102 on the first and second
sides 98, 100 of the vamp 96 in a crisscross pattern to adjust the
fit of the shoe 20 on a user's foot. It should be appreciated that
the first and second sides 98, 100 of the vamp 96 may include tabs
forming loops, tabs including holes or a combination of tabs
forming loops and tabs with holes.
As shown in FIG. 3, the upper 28 is constructed to have a wider
throat area 108, i.e., width between the opposing sides of the
upper, at the heel portion 30 to allow for even pressure
distribution by the user's heel on the shoe and to provide more
comfort to the user's foot. Further, the upper 28 is constructed to
extend higher along a user's foot in the heel portion 30 to enhance
the stability and comfort of the shoe 20.
To enhance the positioning of the shoe 20 on a user's foot, a strap
110 is attached to the heel portion 30 of the shoe and extends from
the medial side 46 to the lateral side 48 of the shoe about the
heel portion. As shown in FIG. 1, at least a portion of the strap
110 extends a distance away from the heel portion 30 to form a loop
at the heel portion of the shoe 20. The strap 110 can therefore be
grabbed by a user to adjust the position of the shoe 20 on the
user's foot or help to pull the shoe 20 onto the user's foot. A
part of the strap 110 includes a reflective material to help make
the shoe 20 and thereby the user visible in low light conditions.
The strap 110 is preferably made out of a fabric webbing
material.
As shown in FIG. 4, a bottom surface 112 of the outsole 26 includes
a plurality of tread members 114 that extend from the bottom
surface. The tread members 114 are made of a rubber material and
help the shoe 20 engage and grip an underlying surface. It should
be appreciated that the tread members 114 may be any suitable size
and shape, and may be any combination of sizes and shapes as shown
in the illustrated embodiment.
Referring now to FIGS. 17-31, in the following embodiments of the
present shoe 198, the sole 200 comprises three structural axes that
are embodied by stabilizing members extending outwardly from the
general profile of the upper 202, i.e. to the front, to the rear or
laterally, where the stabilizing members perform independently from
one another, and according to different combinations. According to
different embodiments discussed in the following paragraphs, the
stabilizing members may consist of the same material as the sole
200, a different material than the sole 200, synthetic materials,
composite materials, an insert molded in a synthetic material, or
any combination of suitable materials, and may extend partially
over the sole or over the entire sole 200.
In the illustrated embodiments, the midsole 208 includes a
peripheral rim 204 consisting of a wall 206 extending upwardly that
creates a recessed portion or cradle on the top of the midsole that
receives and surrounds the bottom part of the upper 202. In other
words, the top part of the sole 200 comprises the midsole 208
consisting of a hollow profile open at the top that is intended to
receive the upper 202, the midsole 208 including the peripheral rim
204. It should be appreciated that the shoe 198 may be equipped
with a glued or removable insole or footbed. As shown in the
figures, the sole 200 extends substantially under the entire bottom
surface of the upper 202 and upwardly along at least a portion of
the upper, where the thickness thereof is typically greater at the
heel than at the toe. In this way, the peripheral wall 206 provides
support to the sides of the upper 202 to help support and balance a
user's foot while walking, jogging or running on uneven terrain. In
an embodiment, the length (LU) of the upper 202 corresponds
substantially to the shoe size, i.e., women's size 7, men's size
9.5, etc. Note that a conventional sole extends to the front beyond
the upper profile over a length of approximately 2.0 to 25
millimeters, i.e. approximately 0.8% to 6% of the length (LU) of
the upper 202, and generally covers the front upper end of the
upper, i.e., a toe cap, so as to protect the user's toes. The
length ranges relative to the upper are not routine for sports
shoes, but more suitable for walking or safety shoes, which are not
suitable for running and particularly not for a long-distance run,
or a speed run, particularly because they have an outsole,
generally substantially planar, thick and rigid, having a Shore D
hardness between 55 and 65.
Referring to FIGS. 17-21, in an embodiment, a shoe 198a includes
sole 200, comprising a front stabilizing member 210 extending
outwardly, longitudinally from the front of the sole 200 relative
to the general profile of the upper 202. The front stabilizing
member 210 provides a propulsion effect at the end of a stride
while a user is walking, jogging or running. In the illustrated
embodiments, the length (L2) of the front stabilizing member 210 is
7% to 60% of the length (LU) of the upper 202, and preferably 9% to
60% of the length (LU). It is also contemplated that the front
stabilizing member 210 may be 9% to 40% of the length (LU), 9% to
25% of the length (LU), or 20% to 25% of the length (LU).
In this embodiment, the length (L2) of the front stabilizing member
210 is 9% to 11% of the length (LU) of the upper 202.
Alternatively, according to the embodiments illustrated in FIGS. 29
and 30, the length (L2) of the front stabilizing member 210 is 25%
to 25% of the length (LU) of the upper 202. In one embodiment, not
shown, the length (L2) of the front stabilizing member 210 is 25%
to 60% of the length (LU) of the upper 202. Note that the length
(L2) of the front stabilizing member 210 corresponds to the length
between the distal end of the upper 202, relative to the heel, and
the distal end of the front stabilizing member 210. The profile of
the sole 200 extends to the front by the front stabilizing member
210. As shown, the front profile of the sole 200 curves upwardly,
and thereby, decreases in thickness conventionally from the
metatarsal region to the front end of the upper 202.
In an embodiment, the front stabilizing member 210 has a uniform,
or substantially uniform thickness at thickness points (E3, E3a,
E3b), along substantially the entire length (L) of the shoe (FIG.
18). Alternatively, the thickness points or thicknesses (E3, E3a,
E3b) of the front stabilizing member 220 may decrease from the
proximal end to the distal end of the sole 200 relative to the
heel, or may be different thicknesses (E3, E3a, E3b). In the
illustrated embodiment, the mean thickness (E3) of the front
stabilizing member 210 is 2% to 30% of the length (LU) of the upper
202, i.e., the thickness (E3a) at the base of the front stabilizing
member 210 is 2% to 30% of the length (LU) of the upper 202, and
the thickness (E3b) substantially at the distal end of the front
stabilizing member 210 is 2% to 30% of the length (LU) of the upper
202. Note that the thickness (E3a) at the base of the front
stabilizing member 210 corresponds to the thickness of the sole 200
at the distal end of the upper 202 relative to the heel, whereas
the thickness (E3b) substantially at the distal end of the front
stabilizing member 210 corresponds to the thickness of the front
stabilizing member 210 at approximately 4% of the length (LU) of
the upper 202 relative to the distal end of the front stabilizing
member 210. In this embodiment, the mean thickness (E3) of the
front stabilizing member 210 is preferably 2% to 25% of the length
(LU) of the upper 202, and more preferably 3% to 20% of the length
(LU).
In one embodiment, the ratio between the thickness (E3b) at
substantially the distal end thereof and the thickness (E3a) at the
base of the front stabilizing member 210 is 0.25 to 2, more
preferably 0.5 to 2. It should be appreciated that the thickness
(E3) of the front stabilizing member 210 may be modulated according
to the thickness of the sole 200, the constituent material(s) of
the sole 200 and the length of the sole 200. A relatively large
thickness (E3) of the front stabilizing member 210, measured from
the bottom to the top of the front stabilizing member 210, makes it
possible to store energy during the compression of the front
stabilizing member 210 at the end of a stride and to release the
stored energy with a spring effect during the launch phase of the
weight bearing leg.
In the illustrated embodiment, the width (L2) of the widest part of
the upper 202 is located at the metatarsal region and decreases
toward the distal end of the upper 202, i.e., at the toe. As shown,
the front stabilizing member 210 originates at the widest part of
the front part of the upper 202 and extends distally,
longitudinally outward. In other words, the front stabilizing
member 210, forming an outward extension of the sole 200, extends
from the widest zone of the front part of the upper 202 to the
front, i.e. in the distal direction of the front end of the upper
202. Additionally, the curvature of the distal end of the front
stabilizing member 210 is less than or equal to the curvature of
the distal end of the upper 202. In the illustrated embodiment, the
curvature is oriented toward the medial part (PM) of the shoe,
where the volume of the medial part (PM) of the front stabilizing
member 210 is greater than the volume of the lateral part (PL) of
the front stabilizing member 210. Note that the curvature of the
front stabilizing member 210 enhances the propulsion effect by
increasing the volume in the medial part (PM) of the front
stabilizing member 210, which promotes ground contact and relaunch
of a user's stride.
In the above embodiment, the front stabilizing member 210 is an
integral part of the sole 200 and protects the front of the sole
200 in the distal direction of the front end of the upper 202. In
another embodiment, the front stabilizing member 210 has an upward
curvature, i.e., directed from the bottom end of the sole 200 to
the upper 202. In this embodiment, the height (H2) of the distal
end of the bottom surface of the front stabilizing member 210
relative to the bottom surface of the center of the sole 200, i.e.,
with respect to the ground, is 0% to 60% of the length (LU) of the
upper 202, preferably 3% to 30% of the length (LU) of the upper
202, more preferably 3% to 20% of the length (LU) of the upper 202.
It should be appreciated that the height (H2) may be modified based
on the material(s) of the front stabilizing member 210 and the
specific use of the shoe.
In the illustrated embodiment, the thickness (E2) of the sole at
the widest part of the upper, i.e., at the base of the metatarsals,
is 9.5% to 30% of the length (LU) of the upper 202, preferably 20%
and 30% of the length (LU) of the upper 202, more preferably 20% to
25% of the length (LU) of the upper 202. Note that the thickness
(E2) corresponds to the distance between the bottom end of the
upper 202 and the bottom end of the sole 200, where the end of the
sole 200 is in contact with the ground. In this embodiment, the
range of thickness (E2) of the sole 200 at the metatarsal region,
i.e. at the widest part 212 of the upper 202, provides a
progressive shock absorbing effect, during repeated rolling contact
between the shoe and the ground during walking, jogging and
running. It should be appreciated that in an embodiment, the
present shoe may include sole 200 having only the front stabilizing
member 210, such as with shoe 198b shown in FIG. 22. In this
embodiment, the front stabilizing member 210 extends a distance or
length (L2) from the front of the upper.
Referring to FIGS. 17-19, 23, 24, 26, 27, 29 and 30, the sole 200
according to one embodiment, comprises a rear stabilizing member
214, extending longitudinally to the rear relative to the general
profile of the upper 202. In these embodiments, the rear
stabilizing member 214 extends the rolling ground contact phase, by
initiating the ground contact earlier and distally relative to the
heel. Note that the rear stabilizing member 214 provides a more
progressive impact compared to a conventional shoe, through a
fluidity of the pressure paths during each strike at the heel with
the ground.
In the illustrated embodiments, the length (L3) of the rear
stabilizing member 214 is at least 20% of the length (LU) of the
upper 202, and preferably 9% to 60% of the length (LU) of the upper
202, more preferably 22% and 40% of the length (LU) of the upper
202, and more preferably 23% and 25% of the length (LU) of the
upper 202. Note that the length (L3) of the rear stabilizing member
214 corresponds to the distance between the proximal end of the
upper 202, i.e. the rear end of the upper 202 at the heel, and the
distal end of the rear stabilizing member 214. Preferably, the rear
stabilizing member 214 has a uniform, or substantially uniform,
thickness (E4) along substantially the entire length of the rear
stabilizing member 214. It is also contemplated that the thickness
(E4) of the rear stabilizing member 214 decreases from the proximal
end to the distal end of the rear stabilizing member. It should be
noted that the mean thickness (E4) of the rear stabilizing member
214 is 7% to 40% of the length (LU) of the upper 202, preferably 9%
to 30% the length (LU) of the upper 202, and more preferably 22% to
25% the length (LU) of the upper 202. In an embodiment, the
thickness (E4) of the rear stabilizing member is at least 1.0 cm.
Also, the thickness (E4) of the rear stabilizing member 214 may be
modified according to the thickness, the constituent material(s)
and the length of the sole.
A relatively large thickness (E4) of the rear stabilizing member
214 helps to enhance shock absorption during compression of the
rear stabilizing member at the start of a stride and promotes the
initiation of the ground contact phase from a strike downstream
from the heel to a heel contact, followed by a forward propulsion.
Also, combining a large thickness (E4) of the rear stabilizing
member 214 with a large thickness of the general profile of the
sole 200 creates longitudinal shear strain at the sole, which
reduces the strain sustained by the joints and the back of a
user.
As shown in FIGS. 17-18, the thickness (E4) of the rear stabilizing
member 214 is greater than the thickness (E2) of the sole 200 at
the heel 216. Note that the thickness (E2) corresponds to the
distance between the bottom end of the upper 202 at the heel 216
and the bottom surface of the sole 200, i.e. the end of the sole
200, that contacts the ground. In the illustrated embodiment, the
top part of the rear stabilizing member 214 substantially encases
an outer periphery of the top part of the heel, which promotes
shock absorption during ground contact of the heel. As shown in
FIG. 2, the rear stabilizing member 214 has a concave shape, along
a cross-section perpendicular to the bottom surface of the sole
200, where the concave shape of the rear stabilizing member 214
provides optimized strain distribution.
Referring to FIG. 29, in another embodiment, the rear stabilizing
member 214 is raised upwardly, i.e. the rear stabilizing member is
embodied by a tongue-shaped profile which has a concave curvature,
along a perpendicular plane to the bottom surface of the sole
200.
Referring to FIG. 24, in a further embodiment, a shoe 198d includes
sole 200 with rear stabilizing member 214, which originates at the
widest part (L2) of the front part of the upper 202, and extends
distally, longitudinally to the rear of the shoe, the lateral
profile thereof following the rear lateral profile of the upper
202, but more broadly, extending distally beyond the heel. In this
embodiment, the rear stabilizing member 214, forming an extension
of the rear part of the sole 200, extends from the widest part 212
of the front part of the upper 202 to the rear, i.e., in the distal
direction with respect to the heel.
In another embodiment shown in FIG. 23, a shoe 198c has a sole
where the rear stabilizing member 214 originates at the narrowing
part 218 of the upper 202 facing the arch of the foot and extends
distally longitudinally to the rear of the shoe, the lateral
profile thereof following the lateral profile of the upper 202, and
extending distally beyond the heel. In all of these embodiments,
the difference in lateral thickness of the rear stabilizing member
214 relative to the lateral profile of the upper 202 is 2% to 6% of
the length (LU) of the upper 202, as illustrated for example, in
FIG. 24.
In an embodiment, the curvature of the distal end of the rear
stabilizing member 214, along a sectional plane parallel with the
bottom surface of the sole 200, is equal to, or greater than, the
curvature of the proximal end of the upper 202 at the heel. In
another embodiment, the distal curvature cited above relative to
the heel, of the rear stabilizing member 214 is equal to that of
the upper 202. In a further embodiment, the distal curvature cited
above relative to the heel, of the rear stabilizing member 214 is
greater than that of the upper 202. It should be noted that the
relatively large width (L6) of the rear stabilizing member 214
enables optimized contact with the ground upon an early strike of a
stride, i.e. distally with respect to the heel. To this end, the
mean width (L6) of the rear stabilizing member 214 is 20% to 40% of
the length (LU) of the upper 202.
In the illustrated embodiment, the rear stabilizing member 214 is
an integral part of the sole 200 and protects the rear of the sole
200 in the distal direction of the rear end of the upper 202. Also,
the bottom surface of the rear stabilizing member 214 has an upward
curvature, i.e. directed from the bottom end of the sole 200 to the
upper 202. Furthermore, the height (H2) of the distal end of the
bottom surface of the rear stabilizing member 214 relative to the
bottom surface of the center of the sole 200, i.e., with respect to
the ground, is 0 to 60% of the length (LU) of the upper 202,
preferably 3% to 60% of the length (LU) of the upper 202, more
preferably, 4% to 60% of the length (LU) of the upper 202, more
preferably 4% to 30% of the length (LU) of the upper 202, more
preferably 5% to 20% of the length (LU) of the upper 202.
Referring to FIG. 25, in a further embodiment, a shoe 198e includes
sole 200 comprising a lateral stabilizing member 220 located on
both sides of the heel. The lateral stabilizing member 220 includes
two lobes (222a, 222b), i.e., a lateral lobe 222a and a medial lobe
222b, that are located on and extend outwardly from opposing sides
of the rear part of the upper 202 at the heel. During use of the
shoe, the lateral stabilizing member 220 increases the lateral
stability during a strike at the heel, by realigning the pressure
paths toward the longitudinal median axis of the shoe profile.
Further, upon poor positioning of the foot on ground contact, the
lateral stabilizing member provides a sufficient delay time for the
reflex mechanism to react and recover from the poor positioning,
which helps to prevent injury to the user. Also, the lateral
stabilizing member 220 helps to realign a user's feet during the
strike phase, which limits fatigue by improving the regularity of
motion during stride sequences. It should be appreciated that the
lateral stabilizing member may extend outwardly from the medial
side, the lateral side or both sides of the shoe.
In the illustrated embodiment, the lateral width (L4) of the
lateral stabilizing member 220, on one side of the upper 202 at the
heel, i.e., the lateral width (L4) of a lobe (222a, 222b), i.e.,
the distance the lobes each extend outwardly from the upper, is at
least 5% of the length (LU) of the upper 202, and preferably 5% to
20% of the length (LU) of the upper 202, and more preferably 5% to
22% of the length (LU) of the upper 202. Furthermore, in an
embodiment, the width of the medial lobe 222b or inner lobe (i.e.,
the medial distance that the lobe 222b extends from the upper), is
less than the width of the lateral lobe 222a or the outer lobe
(i.e., the lateral distance that the lobe 222a extends from the
upper). It should be appreciated that the width of the medial lobe
222b may be greater than the width of the lateral lobe 222a or the
medial and lateral lobes may have the same width. Further, the
greatest lateral width (L5) from one edge to the other edge of the
lateral stabilizing member 220, at the bottom surface of the sole
200, is 50% to 60% of the length (LU) of the upper 202, and
preferably 52% and 57% of the length (LU) of the upper 202.
In an embodiment, the greatest width (L5) of the lateral
stabilizing member 220 at the bottom surface of the sole 200 is
equal to or greater than the largest width (L2) of the upper 202 at
the metatarsal region. Further, the ratio between the greatest
width (L5) of the lateral stabilizing member 220 at the bottom
surface of the sole 200 and the greatest width (L2) of the upper
202 at the metatarsal region, is 2 to 3, preferably 2.2 to 2.5,
more preferably 2.2 to 2.5. It should be appreciated that the
ration may also be 2.25 to 2, or within a range greater than or
equal to 2.3 and less than 2. Note that in the illustrated
embodiment, the ratio of the shoe is at least less than 2.0, and
preferably 0.6 to 0.9. As shown in FIG. 25, the outer profile of
the lateral stabilizing member 220 originates at the widest part
222 of the front part of the upper 202, and more specifically, at
the center or midfoot area of the upper 202, i.e., preferably at
least at the center of the arch of the foot, to extend in a flared
manner up to the rear end of the upper 202. Note also that the
greatest width (L5) of the lateral stabilizing member 220 is
located substantially facing the rear end of the upper 202, and at
least located straight above the heel 226, so as to provide maximum
stability at the ground contact zone of the heel.
In another embodiment, the lateral stabilizing member 220, or the
part of the sole 200 forming the lateral stabilizing member 220,
i.e., the lobes (222a, 222b), is more flexible than the other parts
of the sole 200. In this way, the lateral stabilizing member 220
limits torque effects by limiting any overly abrupt return effects
to a normal position of the shoe upon poor positioning of the heel
on the ground and then recovery to a natural position.
In the illustrated embodiment, the lateral stabilizing member 220,
i.e., the lobes (222a, 222b), include depressions, i.e., hollow
parts, such as outer grooves, that soften the sole 200 on either
side of the heel. In an embodiment, the lateral stabilizing member
220, i.e., the lobes (222a, 222b), is made of a more flexible
material, i.e. having a lower Shore D hardness than the rest of the
sole 200. It should be appreciated that the lateral stabilizing
member may have the same or different hardness than the other parts
of the sole 200.
In a further embodiment shown in FIG. 26, a shoe 198f includes sole
200 comprising a rear stabilizing member 214 and a lateral
stabilizing member 220, thereby forming a rear peripheral
stabilizing member 224 about the heel area of the shoe. In this
embodiment, the rear peripheral stabilizing member 224 spreads out
and realigns the stride, alleviates strain concentrations upon a
heel strike, thereby spreading out the impact forces on a user's
body. As shown in FIGS. 18 and 26, the rear peripheral stabilizing
member 224 has an outer shape similar to an arc of a circle. As
such, the rear peripheral stabilizing member 224 limits drifts and
deviations relative to the positioning of the shoe along the
preferential ground contact line of a natural stride. Note that the
rear peripheral stabilizing member 224 thus extends distally
relative to the heel over a length (L3) corresponding to the length
of the rear stabilizing member 224 cited above, as well as over a
width (L5) corresponding to that of the lateral stabilizing member
220.
Referring now to FIG. 27, in a further embodiment, a shoe 198g
includes sole 200 comprising a front stabilizing member 210 and a
rear stabilizing member 214, which increases the propulsion phase
and generates a greater stride length or height. As such, the
presence of the rear stabilizing member 214 in the combination
cited above makes it possible, due to the increase particularly in
the stride length, to initiate landing, and thereby initiate the
ground strike phase earlier, which provides fluidity of motion of
the user's stride. This fluidity of motion is provided both during
the propulsion phase of a leg to the landing upstream from the heel
on the other leg, and during the rear stride engagement phase to
the forward rolling of the foot to the propulsion phase.
Referring to FIG. 28, in another embodiment, a shoe 198h includes
sole 200 comprising a front stabilizing member 210 and a lateral
stabilizing member 220. In the preceding embodiment, due to the
spring effect of the front stabilizing member 210, the risk of
drift of the force line of the launch and suspension phase
increases. The presence of the lateral stabilizing member 220 in
this embodiment thereby realigns the rear ground contact during the
landing phase and limits the risk of loss of balance and
consequently, the risk of injuries.
Referring to FIGS. 17-19, 29 and 30, in a further embodiment, a
shoe 198i includes sole 200, which has a front stabilizing member
210, as well as a rear peripheral stabilizing member 214 formed
from a rear stabilizing member 214 and a lateral stabilizing member
220, to form a full peripheral stabilizing member 226 of the sole
200. The full peripheral stabilizing member 226 provides fluidity
of a stride between the propulsion phase and the early landing
phase and vice versa. Furthermore, the full peripheral stabilizing
member 226 also limits the risk of drift along the preferential
ground contact line, i.e., potential risks of drift of the landing
phase, due to the propulsion phase, which is increased, and due to
the strike phase initiation phase which is also early. In this
embodiment, the material(s) of the sole 200 have a Shore D hardness
between 30 and 35, but may have any suitable hardness value or
combination of hardness values.
Referring to FIG. 31, in another embodiment, a shoe 198j has a sole
200 with a rear stabilizing member 214 and a lateral stabilizing
member 228, where the lateral stabilizing member includes
protruding lobes 228a and 228b that extend outwardly from the rear
portion of the sole. In an embodiment, the lobes 228a and 228b are
integrally formed with and extend outwardly from the outsole 200
and are separated from the rear stabilizing member. In another
embodiment, the shoe only includes the lateral stabilizing member
228 with lobes 228a and 228b and does not include the rear
stabilizing member 214. In each embodiment, the lobes 228a and 228b
provide lateral support and stability to a user while reducing
impact forces on the user's feet. It should be appreciated that in
each embodiment, the lobes 228a and 228b have a width, i.e.,
lateral distance from the upper, that is at least 5% of the length
(LU) of the upper.
In an embodiment of the present footwear or shoe, a semi-rigid
support plate, such as a carbon plate, is inserted between the
midsole and the outsole to provide additional stability and support
to a user's foot. The support plate is a generally planar plate
that extends along at least a portion of the midsole.
Alternatively, the plate may be inserted in or integrally formed
with the midsole. The plate may extend along a portion of the
midsole and outsole, such as in the heel area, or along the entire
length (L) of the shoe. Additionally, the plate may be made out of
metal, metal fibers encased by a resin, plastic or any suitable
materials or combination of materials.
In another embodiment, a spring plate is inserted between the
midsole and the outsole. The spring plate is a generally planar
plate that extends under the upper and beyond the rear end of the
wall 206 shown in FIG. 18 to provide a resilient spring effect in
the heel area of the shoe to help absorb the impact force on a
user's heel during heel strikes while walking, jogging or running.
In another embodiment, the spring plate extends beyond the front
end of the wall 206 to provide a spring effect during propulsion,
i.e., push off force between the forefoot and the ground. It is
contemplated that the spring plate may extend along the entire
length (L) of the shoe, extend from the front end of the wall 206
to a point beyond the rear end of the wall 206, extend from the
rear end of the wall 206 to a point beyond the front end of the
wall 206 or extend beyond both the front end and the rear end of
the wall 206. In this embodiment, the spring plate is made of a
resilient metal, but may be made with plastic or any suitable
material or combination of materials.
Referring to FIG. 32, in another embodiment, a shoe 198k includes
an upper 232 having a bottom surface and a length, and a sole 230
secured to the bottom surface of the upper 232 and including a
midsole and an outsole. As shown, the sole 230 has a front portion
234 with a front contact surface area and a rear portion 236 with a
rear contact surface area, where the front portion has a front
length (FL) and the rear portion has a rear length (RL) that are
equal to each other relative to the overall length of the shoe (L)
as shown in the illustrated embodiment. In this embodiment, the
rear contact surface area (area of the bottom of the sole that
contacts the ground) is equal to or greater than the front contact
surface area to provide stability and balance to a user during
walking, jogging and running, and to spread or reduce the impact
force on a user's heel along the rear contact surface area thereby
reducing the impact force on the user's body while enhancing
propulsion. It should be appreciated that the length of the front
portion 234 may be less than, equal to or greater than the rear
portion 236 as long as the rear contact surface area is equal to or
greater than the front contact surface area.
Referring to FIG. 33, in a further embodiment, a shoe 198l includes
sole 237 having a midsole and an outsole. A peripheral stabilizing
member 238 extends from a medial side 240a to a lateral side 240b
of the sole and is attached to the midsole by a peripheral support
member 242. In this embodiment, the peripheral support member 242
is a lattice structure that extends outwardly from the midsole to
the peripheral stabilizing member 238 such that the peripheral
stabilizing member is not directly connected to the sole 237. This
provides a hollow space below the peripheral support member between
the sole 237 and the peripheral stabilizing member 238 that allows
the support member 242 and the peripheral stabilizing member 238 to
flex during use to provide support and balance to a user on
different terrains while reducing the impact force on the user's
feet. In another embodiment, the peripheral stabilizing member is
attached to the outsole by the peripheral support member. It should
be appreciated that the peripheral stabilizing member 238 and the
peripheral support member 242 may extend about a portion of the
peripheral surface of the sole 237 from the medial to lateral sides
of the sole or about the entire rear peripheral surface of the sole
as shown in FIG. 33. It should also be appreciated that the
peripheral support member 242 may be a lattice structure, a solid
structure or any suitable structure that attaches the peripheral
stabilizing member to the sole 237.
Furthermore, in the above embodiments, the front stabilizing
member, the lateral stabilizing member including the opposing
lobes, and the rear stabilizing member may be made out of the same
material or different materials. Similarly, the front stabilizing
member, the lateral stabilizing member and rear stabilizing member
may be made of materials having the same hardness value or
different hardness values. For example, one or more of the front
stabilizing member, the lateral stabilizing member and rear
stabilizing member may have the same hardness value or different
hardness values.
While particular embodiments of the present footwear or shoe are
shown and described, it will be appreciated by those skilled in the
art that changes and modifications may be made thereto without
departing from the invention in its broader aspects and as set
forth in the following claims.
* * * * *